1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).
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![1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).](/uploads/image/z/108584-8-4.jpg?t=1-%EF%BC%881%2F2%2B1%2F4%2B1%2F8%2B1%2F16%2B1%2F32%2B1%2F64%2B1%2F128%2B1%2F256%EF%BC%89%E7%AD%89%E4%BA%8E%EF%BC%88+%EF%BC%89.)
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1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).
1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).
1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)等于( ).
1/2+1/4=3/4,1/2+1/4+1/8=7/8……
所以(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)=255/256
所以1-(1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256)=1-255/256=1/256
1/256